EP3635466A1 - Fabric encased micro tubes for air blown fibers - Google Patents
Fabric encased micro tubes for air blown fibersInfo
- Publication number
- EP3635466A1 EP3635466A1 EP18765217.7A EP18765217A EP3635466A1 EP 3635466 A1 EP3635466 A1 EP 3635466A1 EP 18765217 A EP18765217 A EP 18765217A EP 3635466 A1 EP3635466 A1 EP 3635466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jacket
- tubes
- tube
- attached
- innerduct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 34
- 239000004744 fabric Substances 0.000 title claims description 16
- 229920001410 Microfiber Polymers 0.000 claims abstract description 8
- 239000003658 microfiber Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 20
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000004891 communication Methods 0.000 description 14
- 238000009434 installation Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 3
- 239000004700 high-density polyethylene Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
- G02B6/443—Protective covering
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/504—Installation in solid material, e.g. underground
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
- G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts
- G02B6/52—Underground or underwater installation; Installation through tubing, conduits or ducts using fluid, e.g. air
Definitions
- This invention relates to a system of tubes which are adapted to receive optic fibers in the communications industry. More particularly, this invention relates to such tubes which are encased in a fabric material.
- a rigid innerduct or tube usually made of a high density
- polyethylene is provided with a plurality of micro tubes.
- Such innerducts are acceptable for direct burial, but when they are provided on a reel for installation into an underground conduit, installation into the conduit is difficult because the rigid innerducts have reel memory and will often spiral during installation.
- rigid innerducts are costly and difficult to cut in order to gain access to the micro tubes. That is, when installed, at least the majority of the tubes are empty, but when one or more tubes are needed to house optic fibers, the conduit must be unearthed at some location and cut, then the innerduct must be cut, and then the micro tubes must be cut so that the fibers can be blown therein. Such is a difficult and time-consuming process.
- a device adapted to be inserted into a conduit includes a at least one longitudinally extending hollow tube which is adapted to receive optic fibers or micro fiber optic cables therein.
- a longitudinally extending pliant jacket surrounds the tube.
- Fig. 1 is a somewhat schematic end view of fabric encased micro tubes made in accordance with one embodiment of the present invention.
- Fig. 2 is a somewhat schematic end view of fabric encased micro tubes made in accordance with another embodiment of the present invention.
- Fig. 3 is a somewhat schematic end view of fabric encased micro tubes made in accordance with yet another embodiment of the present invention.
- Fig. 4 is a somewhat schematic end view of a fabric encased micro tube with an integral innerduct for a communications cable made in accordance with yet another embodiment of the present invention.
- Fig. 5 is a somewhat schematic end view of another embodiment of that shown in Fig. 4.
- Fig. 6 is a somewhat schematic end view of another embodiment of that shown in Figs. 4 and 5.
- Device 10 includes a plurality of longitudinally extending hollow micro tubes 11 which are adapted to receive micro fiber optic cables or air blown optic fibers therein.
- Tubes 1 are typically made of a thin plastic material such as high density polyethylene (HDPE). As such, they are hard, but, at some point in time, they may be easily severed at some point along their length, and the optic fibers then can be longitudinally blown therein.
- tubes 11 may be considered to be “rigid”. That is, as used herein, "rigid” means reasonably stiff and yet capable of being flexed so that a long length of tubes 11 may be wound on a reel.
- a plurality of tubes 11 are encased in a longitudinally extending pliant sheath or jacket 12 which is preferably made of a low friction fabric material.
- the tubes 1 are shown as being adjacent to, and aligned with, each other.
- jacket 12 can be folded or otherwise easily manipulated so that it and the tubes 11 can fit into a conduit which is typically installed underground.
- the low friction of the fabric jacket 12 renders installation into the conduit easier.
- FIG. 2 Another embodiment of the device is shown in Fig. 2 and indicated generally by the numeral 20.
- a plurality of longitudinally extending hollow, rigid tubes 21 are shown which can be of the same nature and construction as tubes 11.
- Tubes 21 are received in a pliant sheath or jacket 22 which is preferably made of a low friction fabric material.
- Jacket 22 is generally identical to jacket 12 except that its upper surface 23 is connected to its lower surface 24, as at 25, at laterally spaced locations preferably between each tube 21.
- Connections 25 can be a stitching that extends longitudinally along the entire length of device 20.
- jacket 22 is divided into longitudinally extending compartments 26, each of which are intended to carry a tube 2 .
- jacket 22 can be easily manipulated to fit into a communications conduit.
- the tubes are free to move in all directions because unlike the prior art, they are not attached.
- one or more compartments 26 of the jacket 22 can be opened to gain access to the tube 21 therein so that the tube may be severed to receive the optic fibers.
- FIG. 3 Another alternative embodiment of the device is indicated generally indicated by the numeral 30 and shown in Fig. 3.
- a plurality of longitudinally extending rigid, hollow tubes 31 which may be identical in nature and construction to tubes and 21 , are arranged in a bundle or in a generally circular profile.
- the tubes 31 are encompassed and held together by a pliant sheath or jacket 32 which is preferably made of a low friction fabric material.
- jacket 32 may be easily severed to expose the tubes 31 which may be selectively severed to receive the blown optic fibers.
- the device of the embodiment shown in Fig. 4 is generally indicated by the numeral 40.
- Device 40 includes a rigid, hollow, longitudinally extending tube 41 which may be identical in nature and construction to tubes 11 , 21 and 31.
- a jacket 42 which is preferably made of a low friction fabric material, is provided around tube 41 for its entire length.
- An innerduct 43 preferably made of the same material as jacket 42, is attached to jacket 42 and, as is known in the art, innerduct 43 forms a longitudinally extending compartment 44 which, when in a conduit, is adapted to receive a conventional fiber optic communications cable.
- Jacket 42 and innerduct 43 may be separate items which are attached, as at 45, by stitching or the like, or they may be formed of one continuous piece of material with its ends being stitched, or otherwise connected to each other and to itself, as at 45, to form jacket 42 and innerduct 43.
- an insertion device 46 such as a pull tape or a rope, is provided in compartment 44.
- Fig. 5 depicts a variation to the device shown in Fig. 4 just described.
- device 40A includes a second tube 41A and jacket 42B combination attached to the other end of innerduct 43.
- Jacket 42A and innerduct 43 may be separate items attached, as at 47.
- jacket 42, innerduct 43 and jacket 42B may be formed of one continuous piece of material. In that instance, the ends of the material may meet at 45 or 47 and at that location they are stitched or otherwise connected to each other and to itself. At the other location, 45 or 47, the material may be connected to itself thus forming
- Compartment 44 carries an insertion device 46. As such, when device 40A is positioned in a conduit, there is capacity to insert two sets of blown optic fibers or micro fiber optic cables and one fiber optic cable into the conduit.
- Fig. 6 depicts a variation of the device of Figs. 4 and 5.
- this device 40B a single tube 41 and jacket 42 combination is provided just like that of Fig. 4.
- device 40B includes a plurality, three shown, of innerducts 43A forming compartments 44A each of which may carry an insertion device 46A positioned in a compartment 44A.
- Such a three compartment innerduct is shown, for example, in U.S. Patent No. 6,251 ,201 to which reference is made for whatever detail may be necessary to understand the construction of device 40B.
- Fig. 6 shows three innerducts 43A attached to jacket 42 in the same manner that innerduct 43. That is, innerducts 43A may be separately formed and all stitched, or otherwise connected, as at 48, to the ends of jacket 42, or jacket 42 and innerducts 43 could be formed of one continuous piece of material with its ends stitched to each other and stitched to itself at multiple places, all at 48, to form compartments 44A. As a result, a conduit having device 43B may efficiently be used to place one set of blown optic fibers and three fiber optic cables in the conduit.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
- Details Of Indoor Wiring (AREA)
- Treatment Of Fiber Materials (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/640,784 US10234649B2 (en) | 2017-07-03 | 2017-07-03 | Fabric encased micro tubes for air blown fibers |
PCT/US2018/039439 WO2019010034A1 (en) | 2017-07-03 | 2018-06-26 | Fabric encased micro tubes for air blown fibers |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3635466A1 true EP3635466A1 (en) | 2020-04-15 |
EP3635466B1 EP3635466B1 (en) | 2023-09-27 |
EP3635466B8 EP3635466B8 (en) | 2023-11-01 |
Family
ID=63490664
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18765217.7A Active EP3635466B8 (en) | 2017-07-03 | 2018-06-26 | Fabric encased micro tubes for air blown fibers |
Country Status (22)
Country | Link |
---|---|
US (1) | US10234649B2 (en) |
EP (1) | EP3635466B8 (en) |
JP (1) | JP7216028B2 (en) |
KR (1) | KR102537734B1 (en) |
CN (1) | CN110832374B (en) |
AU (1) | AU2018297969A1 (en) |
BR (1) | BR112019028275A2 (en) |
CA (1) | CA3067589C (en) |
CL (1) | CL2019003897A1 (en) |
CO (1) | CO2019013938A2 (en) |
CR (1) | CR20190553A (en) |
DK (1) | DK3635466T3 (en) |
ES (1) | ES2966824T3 (en) |
FI (1) | FI3635466T3 (en) |
IL (1) | IL271749B2 (en) |
MY (1) | MY196691A (en) |
PE (1) | PE20200258A1 (en) |
PH (1) | PH12019502714A1 (en) |
PL (1) | PL3635466T3 (en) |
RU (1) | RU2769890C2 (en) |
SG (1) | SG11201912028XA (en) |
WO (1) | WO2019010034A1 (en) |
Family Cites Families (44)
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US2585054A (en) * | 1949-03-10 | 1952-02-12 | Edward J Stachura | Flexible shield for electric conductors |
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DE4039275A1 (en) * | 1990-09-24 | 1992-04-02 | Vogelsang Ernst Gmbh Co Kg | CABLE GUIDE TUBE BUNDLE FROM A MULTIPLE PLASTIC PIPES |
JP2567757B2 (en) * | 1991-06-27 | 1996-12-25 | 未来工業株式会社 | Method of laying wiring / piping material in pipe, laying device for this, and pipe for wiring / piping used for this |
US5413149A (en) * | 1991-11-05 | 1995-05-09 | The Bentley-Harris Manufacturing Company | Shaped fabric products and methods of making same |
US6262371B1 (en) | 1999-06-23 | 2001-07-17 | Marc Talon, Inc. | Method and apparatus for dividing a conduit into compartments |
WO2001001535A1 (en) * | 1999-06-30 | 2001-01-04 | Byun Moo Won | Multiple channel duct assembly for cables |
US6321013B1 (en) * | 1999-09-15 | 2001-11-20 | Lucent Technologies, Inc. | Stacks of optical fiber ribbons closely bound by respective buffer encasements, associated methods, and associated fiber optic cables |
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EP1275023A1 (en) | 2000-03-29 | 2003-01-15 | Emtelle UK Limited | Cable for installation in duct |
US6571833B1 (en) * | 2000-07-14 | 2003-06-03 | Milliken & Company | Optic cable conduit insert and method of manufacture |
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BR0212239A (en) | 2001-08-31 | 2004-10-26 | Federal Mogul Powertrain Inc | Carrier flexibly, and, method to do the same |
KR100985729B1 (en) | 2002-08-28 | 2010-10-07 | 티브이씨 커뮤니케이션즈, 엘.엘.씨. | Cable guide sleeving structure |
US20040042743A1 (en) * | 2002-09-03 | 2004-03-04 | Kariofilis Konstadinidis | Optical fiber cables for microduct installations |
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US20050194578A1 (en) * | 2004-03-03 | 2005-09-08 | Morris David D. | Innerduct guide tube assembly for fiber optic cable |
KR20070043003A (en) * | 2004-08-12 | 2007-04-24 | 엠텔 유케이 리미티드 | Tube bundle for optical fibres, and method of manufacturing such bundle |
US7460753B2 (en) * | 2006-07-06 | 2008-12-02 | Anthony Stephen Kewitsch | Shape-retaining fiber optic cables having limited bend radius |
US20080054236A1 (en) * | 2006-08-31 | 2008-03-06 | Morris David D | Method of installing a conduit, innerduct, and cable |
JP2008070573A (en) | 2006-09-14 | 2008-03-27 | Sumitomo Electric Ind Ltd | Composite optical fiber cable |
US7754971B2 (en) | 2006-11-21 | 2010-07-13 | Milliken & Company | Detectable pull tape |
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KR20110000206U (en) * | 2009-07-01 | 2011-01-07 | 케이넷(주) | Protection Tube for Optical Fiber |
JP4897058B2 (en) * | 2010-01-14 | 2012-03-14 | 株式会社オートネットワーク技術研究所 | Shield conductive path |
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-
2017
- 2017-07-03 US US15/640,784 patent/US10234649B2/en active Active
-
2018
- 2018-06-26 DK DK18765217.7T patent/DK3635466T3/en active
- 2018-06-26 CN CN201880044204.1A patent/CN110832374B/en active Active
- 2018-06-26 ES ES18765217T patent/ES2966824T3/en active Active
- 2018-06-26 KR KR1020207003100A patent/KR102537734B1/en active IP Right Grant
- 2018-06-26 CR CR20190553A patent/CR20190553A/en unknown
- 2018-06-26 SG SG11201912028XA patent/SG11201912028XA/en unknown
- 2018-06-26 JP JP2019571572A patent/JP7216028B2/en active Active
- 2018-06-26 FI FIEP18765217.7T patent/FI3635466T3/en active
- 2018-06-26 PE PE2019002487A patent/PE20200258A1/en unknown
- 2018-06-26 PL PL18765217.7T patent/PL3635466T3/en unknown
- 2018-06-26 RU RU2019141625A patent/RU2769890C2/en active
- 2018-06-26 BR BR112019028275-0A patent/BR112019028275A2/en active Search and Examination
- 2018-06-26 WO PCT/US2018/039439 patent/WO2019010034A1/en active Application Filing
- 2018-06-26 CA CA3067589A patent/CA3067589C/en active Active
- 2018-06-26 MY MYPI2019007635A patent/MY196691A/en unknown
- 2018-06-26 EP EP18765217.7A patent/EP3635466B8/en active Active
- 2018-06-26 AU AU2018297969A patent/AU2018297969A1/en not_active Abandoned
- 2018-06-26 IL IL271749A patent/IL271749B2/en unknown
-
2019
- 2019-12-02 PH PH12019502714A patent/PH12019502714A1/en unknown
- 2019-12-11 CO CONC2019/0013938A patent/CO2019013938A2/en unknown
- 2019-12-30 CL CL2019003897A patent/CL2019003897A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
CO2019013938A2 (en) | 2020-01-17 |
CL2019003897A1 (en) | 2020-05-22 |
US10234649B2 (en) | 2019-03-19 |
SG11201912028XA (en) | 2020-01-30 |
US20190004271A1 (en) | 2019-01-03 |
RU2019141625A (en) | 2021-08-03 |
JP2020526788A (en) | 2020-08-31 |
IL271749A (en) | 2020-02-27 |
FI3635466T3 (en) | 2023-11-06 |
ES2966824T3 (en) | 2024-04-24 |
CA3067589C (en) | 2023-06-20 |
JP7216028B2 (en) | 2023-01-31 |
EP3635466B1 (en) | 2023-09-27 |
IL271749B1 (en) | 2023-08-01 |
WO2019010034A1 (en) | 2019-01-10 |
MY196691A (en) | 2023-04-30 |
RU2019141625A3 (en) | 2021-11-23 |
KR102537734B1 (en) | 2023-05-26 |
KR20200018701A (en) | 2020-02-19 |
CA3067589A1 (en) | 2019-01-10 |
AU2018297969A1 (en) | 2019-12-19 |
RU2769890C2 (en) | 2022-04-07 |
CN110832374A (en) | 2020-02-21 |
BR112019028275A2 (en) | 2020-07-14 |
DK3635466T3 (en) | 2024-01-02 |
PH12019502714A1 (en) | 2020-10-19 |
PE20200258A1 (en) | 2020-02-03 |
EP3635466B8 (en) | 2023-11-01 |
CN110832374B (en) | 2022-03-22 |
CR20190553A (en) | 2020-02-26 |
IL271749B2 (en) | 2023-12-01 |
PL3635466T3 (en) | 2024-03-18 |
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